12556004 has 12 divisors (see below), whose sum is σ = 22509228. Its totient is φ = 6124800.

The previous prime is 12555997. The next prime is 12556039. The reversal of 12556004 is 40065521.

It can be written as a sum of positive squares in 2 ways, for example, as 2958400 + 9597604 = 1720^2 + 3098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38117 + ... + 38444.

It is an arithmetic number, because the mean of its divisors is an integer number (1875769).

Almost surely, 2^12556004 is an apocalyptic number.

It is an amenable number.

12556004 is a deficient number, since it is larger than the sum of its proper divisors (9953224).

12556004 is a wasteful number, since it uses less digits than its factorization.

12556004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76606 (or 76604 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 12556004 is about 3543.4452161703. The cubic root of 12556004 is about 232.4255220652.

The spelling of 12556004 in words is "twelve million, five hundred fifty-six thousand, four".